From `Alee bin Ja`far (عليه السلام) said: “A man came to my brother Moosa bin Ja`far (Al-Kaadhim) (عليه السلام) and said: ‘May I be sacrificed for you! I want to take a trip, pray for me.’ So he (عليه السلام) said: ‘And when are you leaving?’ He said: ‘Monday’. So he (عليه السلام) said to him: “And why are you leaving on a Monday?’ He said: ‘I want to seek barakah (blessings), because the Messenger of Allaah (صلى الله عليه وآله وسلم) was born on a Monday.’ So he (عليه السلام) said: They have lied! The Messenger of Allaah (صلى الله عليه وآله وسلم) was born on the Jumu`ah (Friday), and there is no day from great misfortunes than Monday. It was in this day the Messenger of Allaah died, and revelation from the sky ceased. And we were oppressed of our right (on this day). (He (عليه السلام) said): “Do you not (want me) to show you an easy simple (day) that in it Allaah made for Dawood (عليه السلام) the iron soft?” So the man said: ‘Yes, may I be sacrificed for you!’ So he (عليه السلام) said: “Leave on a Tuesday’”

From Abee Ayyoub Al-Khazzaaz said: “That we wanted to leave (for a journey), so we went to give our salaam to Abee `Abd Allaah (عليه السلام). So he (عليه السلام) said: ‘Have you tried to seek barakah (blessings) on Monday?” So we said: ‘Yes’ So he (عليه السلام) said: “No other day is of great misfortune than a Monday. (this) Day we lost our prophet (صلى الله عليه وآله وسلم), and revelation ceased for us, do not leave (on a Monday), but leave on a Tuesday”

“And it is narrated by Al-Sadooq in Al-Faqeeh with a SaHeeH sanad from Abee Ayyoub, and it is narrated in Al-KhiSaal, also with a SaHeeH sanad from `Alee bin Ja`farfrom his brother (عليه السلام), and also by Al-Himyaree in Qurb Al-Isnaad.And it shows from the many akhbaar (hadeeth) that a day of misfortune is Monday, and that Tuesday is a day chosen for travel”